Bi-directional power control system for voltage converter
First Claim
1. A control system for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:
- a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal;
a power regulator for transforming the power comparison signal to a commanded current signal;
a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal;
a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
a PWM for using the PWM duty cycle command signal to control electrical switches of the converter.
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Accused Products
Abstract
A control system for a voltage converter includes: a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. The control system may further include: a command multiplier for converting a voltage signal across the output terminals of the converter to a gain signal having a value between zero (0) and unity (1), and a power multiplier for multiplying the commanded power signal by the gain signal to provide a limited commanded power signal, wherein power comparator compares the limited commanded power signal with the power signal on the input terminals.
119 Citations
18 Claims
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1. A control system for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:
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a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. - View Dependent Claims (2, 3, 4)
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5. A voltage limiting system for a voltage converter, the control system comprising:
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a command multiplier for converting a voltage signal across output terminals of the converter to a gain signal having a value between zero (0) and unity (1); a current multiplier for multiplying a commanded current signal by the gain signal to provide a limited commanded current signal; a current comparator for comparing the limited commanded current signal with a measured current signal on an output terminal of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. - View Dependent Claims (6)
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7. A control system for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:
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a power comparator for comparing a power signal on output terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on the output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; a PWM for using the PWM duty cycle command signal to control electrical switches of the converter.
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8. A control system for regulating bi-directional power flow from a multi-phase power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:
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a power comparator for comparing power signals on input terminals of the converter with commanded power signals and producing power comparison signals; a power regulator for transforming the power comparison signals to commanded current signals; a current comparator for comparing the commanded current signals with measured current signals on the input terminals of the converter and producing current comparison signals; a current regulator for transforming the current comparison signals to pulse width modulator (PWM) duty cycle command signals; a PWM for using the PWM duty cycle command signals to control electrical switches of the converter. - View Dependent Claims (9)
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10. A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the method comprising:
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comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; transforming the power comparison signal to a commanded current signal; comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and using the PWM duty cycle command signal to control electrical switches of the converter. - View Dependent Claims (11, 12, 13)
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14. A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device while limiting voltage on the auxiliary energy storage device, the method comprising:
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converting a voltage signal across output terminals of the converter to a gain signal having a value between zero (0) and unity (1); multiplying a commanded current signal by the gain signal to provide a limited commanded current signal; comparing the limited commanded current signal with a measured current signal on an output terminal of the converter and producing a current comparison signal; transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and using the PWM duty cycle command signal to control electrical switches of the converter. - View Dependent Claims (15)
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16. A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the method comprising:
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comparing a power signal on output terminals of the converter with a commanded power signal and producing a power comparison signal; transforming the power comparison signal to a commanded current signal; comparing the commanded current signal with a measured current signal on the output terminals of the converter and producing a current comparison signal; transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and using the PWM duty cycle command signal to control electrical switches of the converter.
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17. A method for regulating bi-directional power flow from a multi-phase power bus through a voltage converter to an auxiliary energy storage device, the method comprising:
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comparing power signals on input terminals of the converter with commanded power signals and producing power comparison signals; transforming the power comparison signals to commanded current signals; comparing the commanded current signals with measured current signals on the input terminals of the converter and producing current comparison signals; transforming the current comparison signals to pulse width modulator (PWM) duty cycle command signals; using the PWM duty cycle command signals to control electrical switches of the converter. - View Dependent Claims (18)
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Specification